@heavanet- Thanks for the tip. I have also found that if you keep your avocado tree indoors part of the year, it is important to make sure it gets a lot of sun each day. This will also help to dry up excess water.
Each time you transplant an avocado tree, it is als important to make sure that the new pot has plenty of room for its root system. From my experience with these plants, the more room that the roots have to spread out, the healthier and stronger the tree.